有时wifi反复断开。有时在几个小时或 30 分钟后断开连接，我找不到原因。有时运行时sudo docker exec -it 96414b09135d bash它也会在几分钟后断开连接。
我尝试设置
sudo nano /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
wifi.powersave = 2
并尝试过
- 须藤 ifconfig wlp2s0 下来
- sudo iwconfig wlan0 关闭电源
- sudo ifconfig wlp2s0 向上
- sudo 服务网络管理器重新启动
并尝试过
systemctl list-unit-files --state enabled
keyboard-setup.service enabled enabled
ModemManager.service enabled enabled
network-manager.service enabled enabled
networkd-dispatcher.service enabled enabled
也尝试过，
sudo wpa_supplicant -i wlan0 -D wext -c /etc/wpa_supplicant/wpa_supplicant.conf
Successfully initialized wpa_supplicant
Failed to open config file '/etc/wpa_supplicant/wpa_supplicant.conf', error: No such file or directory
Failed to read or parse configuration '/etc/wpa_supplicant/wpa_supplicant.conf'.
也尝试过sudo nano /etc/NeworkManager/NetworkManger.conf
[device]
wifi.scan-rand-mac-address=no
尝试过：
- sudo服务蓝牙重启
- sudo modprobe wl sudo lshw -C 网络
- sudo apt install 网络管理器
- 克隆https://github.com/mehedihshakeel/BroadcomInstaller2017.git 克隆 https://github.com/prasathlk/BroadcomInstaller2019.gitcd BroadcomInstaller2019/./Broadcom.sh
这里/etc/pm/sleep.d$ ls
10_grub-common 10_unattended-upgrades-hibernate config
这里echo "options QCA9377 fwlps=N" | sudo tee /etc/modprobe.d/QCA9377.conf
options QCA9377 fwlps=N
这里sudo nano /etc/dhcp/dhclient.conf
#timeout 300；
这里dpkg -S $(which NetworkManager)
network-manager: /usr/sbin/NetworkManager
这是我的apt policy network-manager
network-manager:
Installed: 1.22.10-1ubuntu2.2
Candidate: 1.22.10-1ubuntu2.2
Version table:
*** 1.22.10-1ubuntu2.2 500
500 http://in.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
100 /var/lib/dpkg/status
1.22.10-1ubuntu1 500
500 http://in.archive.ubuntu.com/ubuntu focal/main amd64 Packages
以下是我的sudo journalctl -fu NetworkManager
<info> [1637549618.0666] dhcp6 (wlp2s0): state changed unknown -> bound
<warn> [1637549996.3364] sup-iface[0x55dc05fec3d0,wlp2s0]: connection disconnected (reason -3)
<info> [1637549996.4370] manager: rfkill: Wi-Fi now disabled by radio killswitch
<info> [1637549996.4374] device (wlp2s0): state change: activated -> unavailable (reason 'none', sys-iface-state: 'managed')
<info> [1637549996.4665] dhcp4 (wlp2s0): canceled DHCP transaction
<info> [1637549996.4666] dhcp4 (wlp2s0): state changed bound -> done
<info> [1637549996.4672] dhcp6 (wlp2s0): canceled DHCP transaction
<info> [1637549996.4672] dhcp6 (wlp2s0): state changed bound -> done
---------------------
<warn> [1637553729.6989] sup-iface[0x55dc05fec1f0,wlp2s0]: connection disconnected (reason -3)
<info> [1637553729.6992] device (wlp2s0): supplicant interface state: completed -> disconnected
<info> [1637553729.6992] device (p2p-dev-wlp2s0): supplicant management interface state: completed -> disconnected
<info> [1637553729.7093] device (wlp2s0): state change: deactivating -> disconnected (reason 'new-activation', sys-iface-state: 'managed')
<info> [1637553729.7305] dhcp4 (wlp2s0): canceled DHCP transaction
<info> [1637553729.7306] dhcp4 (wlp2s0): state changed bound -> done
<info> [1637553729.7314] dhcp6 (wlp2s0): canceled DHCP transaction
<info> [1637553729.7314] dhcp6 (wlp2s0): state changed bound -> done
---------------------
<warn> [1637553946.7590] sup-iface[0x55dc05fec1f0,wlp2s0]: connection disconnected (reason -4)
<info> [1637553946.7982] device (wlp2s0): supplicant interface state: completed -> disconnected
<info> [1637553946.7982] device (p2p-dev-wlp2s0): supplicant management interface state: completed -> disconnected
<info> [1637553950.8662] device (wlp2s0): supplicant interface state: disconnected -> scanning
<info> [1637553950.8662] device (p2p-dev-wlp2s0): supplicant management interface state: disconnected -> scanning
<warn> [1637553962.0505] device (wlp2s0): link timed out.
<info> [1637553962.0529] device (wlp2s0): state change: activated -> failed (reason 'ssid-not-found', sys-iface-state: 'managed')
<warn> [1637553962.0610] device (wlp2s0): Activation: failed for connection 'WIFINAME'
<info> [1637553962.0650] device (wlp2s0): state change: failed -> disconnected (reason 'none', sys-iface-state: 'managed')
<info> [1637553962.0985] dhcp4 (wlp2s0): canceled DHCP transaction
<info> [1637553962.0986] dhcp4 (wlp2s0): state changed bound -> done
<info> [1637553962.1123] manager: NetworkManager state is now CONNECTED_LOCAL
<info> [1637553980.3890] manager: rfkill: Wi-Fi hardware radio set disabled
<info> [1637553980.3891] device (wlp2s0): state change: disconnected -> unavailable (reason 'none', sys-iface-state: 'managed')
<info> [1637553980.3930] audit: op="radio-control" arg="wireless-enabled" pid=1512 uid=1000 result="success"
<info> [1637553980.3934] device (p2p-dev-wlp2s0): state change: disconnected -> unavailable (reason 'supplicant-failed', sys-iface-state: 'managed')
<info> [1637553980.3962] manager: rfkill: Wi-Fi now disabled by radio killswitch
<info> [1637553984.3856] manager: rfkill: Wi-Fi hardware radio set enabled
<info> [1637553984.6532] audit: op="radio-control" arg="wireless-enabled" pid=1512 uid=1000 result="success"
<info> [1637553984.6538] manager: rfkill: Wi-Fi now enabled by radio killswitch
<info> [1637553984.8032] sup-iface[0x55dc05fec100,wlp2s0]: supports 5 scan SSIDs
<info> [1637553984.8048] device (wlp2s0): supplicant interface state: starting -> ready
<info> [1637553984.8049] device (p2p-dev-wlp2s0): state change: unavailable -> disconnected (reason 'supplicant-available', sys-iface-state: 'managed')
<info> [1637553984.8055] device (wlp2s0): state change: unavailable -> disconnected (reason 'supplicant-available', sys-iface-state: 'managed')
答案1
你找到解决办法了吗？您可以看一下这个线程：https://askubuntu.com/questions/1230140/wifi-keeps-dropping-out-ubuntu-20-04-and-broadcom-wireless-adaptor。如果有帮助请告诉我。